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汉语拼音：hài chóng

指直接和间接危害人类的昆虫及螨类等。有的害虫传染疾病，如苍蝇、蚊子；有的危害农作物，如蝗虫、螟虫；有的危害建筑物，如白蚁。

1. 有害的虫类。如传染疾病的苍蝇、蚊子、危害农作物、树木的蝗虫、棉蚜等。

   洪深 《青龙潭》第一幕：“省里不是办了一个农林试验所，专替我们农田除掉害虫么？” 沈从文 《从文自传·我上许多课仍然不放下那一本大书》：“在那里最有趣处是可以辨别各种禾苗，认识各种害虫，学习捕捉蚱蜢分别蚱蜢。”

• To be confronted with restricting chemosynthesis pesticides used in organic orchards, insect pest control had become a bottleneck.

  面临有机果园不准使用化学合成农药的限制，果树害虫防治成为瓶颈问题。

• I just want to get to a safe place and I never attempt to be a harmful computer fan.

  我只想找一个安全的地方，决没想过要做一只害虫。

• He says collaborators are trying to reformulate the liquid chemical into a powder form that might be more useful in pest control.

  他说合作者正在尝试改良液体的生物碱成粉末状便于用在害虫防治上。

• The agency said the genetically engineered sugar beets do not harm the environment or increase threats by pests.

  该部门表示，这种转基因甜菜不会对环境造成影响，也不会增加害虫蔓延的威胁。

• How much of each year do spiders spend killing insects?

  蜘蛛每年用多长时间消灭害虫？。

• Apartment Manager: There aren't any rodents or any other vermin in this apartment complex. I make sure of that.

  房屋经理：在这栋公寓大楼里绝不会出现啮齿动物，或者其它害虫。我敢向你保证。

• Happily, he said the agency knew of no reported complaints of underground vermin climbing on subway passengers.

  令人欣慰的是，他说运输署并未听说过有地下害虫爬到地铁乘客脸上的举报投诉。

• You can play your electronic play, but I don't like you to be a harmful computer fan.

  你可以继续玩你的电子游戏，但我不想你变成一只害虫。

• Guo viewed flies as his mortal enemy and decided to devote the rest of his life to the eradication of the bothersome insects.

  从那时起，郭把苍蝇看成自己的死对头，决心今后把所有的精力都用在消灭这种烦人的害虫上面。